Question: Who was head of the Munich government until 06/30/1993?
Paraphrase: Who ran the Munich Government until 6/30/1993?
SPARQL (Wikidata): SELECT ?obj WHERE { wd:Q1726 p:P6 ?s . ?s ps:P6 ?obj . ?s pq:P582 ?x filter(contains(YEAR(?x),'1993')) }